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{{alias}}( x, y )
Computes `x - nπ/2 = r`.
The function returns `n` and stores the remainder `r` as the two numbers
`y[0]` and `y[1]`, such that `y[0] + y[1] = r`.
For input values larger than `2^20 * π/2` in magnitude, the function only
returns the last three binary digits of `n` and not the full result.
Parameters
----------
x: number
Input value.
y: Array|TypedArray|Object
Remainder elements.
Returns
-------
n: integer
Factor of `π/2`.
Examples
--------
> var y = [ 0.0, 0.0 ];
> var n = {{alias}}( 128.0, y )
81
> var y1 = y[ 0 ]
~0.765
> var y2 = y[ 1 ]
~3.618e-17
See Also
--------
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